How real/realistic can Crysis be?

As PC-Games reports, Crysis looks pretty real... It's hard to see differences between screenshots and real photos. Just take a look at this picture... what's the game and what's real? Thanks to Crysis-Online.com for the last two images!

  

Related Links:
- PC-Games.de
- "Forum-Thread" (you can also answer in english) @ Crysis-HQ.com